Sanpu via Amazon offers its Sanpu Digital Basal Oral Thermometer for $12.99. Coupon code "J2JZNEBF" drops it to $4.94. Plus, Prime members bag free shipping. That's tied with our mention from five days ago as the lowest price we've seen. (It's the best deal now by $10.) It can be used as an oral, armpit, or rectal thermometer and features a flexible probe. Deal ends December 31.